Yes, Untill we get to know you here -or at least get to know your tractor :)- always mention if it is a 3 or 4 cyl model.
Your dealer sounds like he's full of hooey.
Put a test gauge on it somewhere and check the pressure - either on a remote hose or if you don't have remotes hook it to the test port on the blank cover under the seat - first photo.
Just as you can not see what your electrics without a meter you can not see your hydraulic pressure without a gauge. Cheap gauge can be had from Northerntool or ebay.
Post back with your findings. Someone here can surely help you.